Home / 20,420,067.39-30,611,561.70-10,188,056.67

Finding the Fourth Proportional to 20,420,067.39, 30,611,561.70 and 10,188,056.67

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Solution

The fourth proportional to 20,420,067.39, 30,611,561.70 and 10,188,056.67 is: 15,272,835.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,420,067.39 : 30,611,561.70 = 10,188,056.67 : x
  2. Step 2: Convert to fraction form
    20,420,067.39/30,611,561.70 = 10,188,056.67/x
  3. Step 3: Cross multiply
    20,420,067.39x = 30,611,561.70 × 10,188,056.67
  4. Step 4: Simplify right side
    20,420,067.39x = 311,872,325,356,801.50
  5. Step 5: Solve for x
    x = 311,872,325,356,801.50/20,420,067.39
  6. Step 6: Final answer
    x = 15,272,835.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.